APFIVE Average Rate of Change of a Function
Consider the function $$f(x)=x^2$$. Find the average rate of change over the interval [$$a, b$$]. Which of the following is true about the average rate of change of $$f(x)$$?
A
$$a+b$$
B
$$\frac{a^2+b^2}{b-a}$$
C
$$2*b$$
D
$$\frac{a+b}{2}$$
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